write an equation in slope intercept form for the line that passes through the given points (5, -2), (-16, 4) MEDALS WILL BE REWARDED !!!
y-mx+b and y2-y1/x2-x1
m=-2/7
y=2(x+2)/7 y=-2x/7 -4/7
is that it or does it go more
\[y=\frac{ -2 }{ 7 }\frac{ -4 }{ 7 }\]
nope that's it
the negative sign should be in line with the division sign though
ok thank you very much :D greatly appreciated and medal was awarded
Thanks!
ok can you help me with another problem
I'll try
ok here it is write an equation in slope-intercept form for the line that passes through the given point AND is parallel to the given line. (-3, 5); y= -1/2x+4 **theres also another set of points but i will give them to you after this question**
The parallel line is y=-1/2x+7/2
could you explain a little bit im kind of lost in these type of questions
Start with the slope intercept formula: y=mx+b
okay and then just add the numbers to replace the variables?
so m=-1/2
you need to find b then plug in the variables
and b=4
right?
b=7/2
what? how did you get that :/ im lost again
x=3 and y=5 from the points that were listed
you mean x = -3 not 3
so if m=-1/2; x=-3 and y=5 then you are going to rework the formula to solve for b. 5=(-1/2)*(-3)+b
yes, I meant - 3 above
b+3/2=5
b=7/2
oh okay i get what you did here
now plug in the numbers to the formula and you get y=-1/2x+7/2
yeah i get it now
but the second set of points isnt ordered like this one
You didn't give me a 2nd set of points. Only 1 set and a line to be parallel to
same question different set of pairs do you have the time to help or should i post it for someone else
I've got a little time
ok itll be quick i think
write an equation in slope-intercept form for the line that passes through the given point AND is parallel to the given line. (-7, 3); x=4
Wow - ok. That one is done the same way but way different answer. Your m=infinity and there is no Y intercept. x=-7
So if you were graphing the parallel lines the would be crossing the x axis but not the y axis. So picture a line straight up and down
oh ok m=infinity and x=-7 and there is no y-intercept
yes. I posted a graph of the 2 parallel lines if that helps
so the parallel line is x=-7 correct?
yes it helps very much thanks for the effort and time
yes
You're welcome
well thanks again and i know you have to go so yeah if i need help and cant find it i know who to come to :D
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